Sierra / Mallory

Additional Details:

• For: Crusader GM Small Block V8 305, 350 cu. in.

Use With:

• 18-1925: Manifold
• 18-1926: Manifold

Interchanges/Replaces

Mallory

• 9-40471

Osco

• 775-MK
• 775-MK-A

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2949	Barr CHV-47-000 MC 47 27 33395 Crusader 96306 GLM 31100 Mercruiser Stern Drive 27-33395 27-33395B Osco CV-GH Volvo Penta 835966 856034	1	Exhaust Manifold Gasket		N/A

Additional Details:

• For: Crusader GM Big Block V8 454 cu. in.

Use With:

• 18-1929: Manifold
• 18-1933: Manifold

Interchanges/Replaces

Mallory

• 9-40473

Osco

• 799-MK

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0418	Barr CHVA470000 MC47-27-46820 Crusader 96653 GLM 33760 Mallory 9-61400 Mercruiser Stern Drive 27-46820 OMC Inboard 909613 OMC Stern Drive 3852472 909613 Osco CW-GH Volvo Penta 3852472	1	Exhaust Manifold Mounting Gasket		N/A

Interchanges/Replaces

GLM

• 34300

Johnson/Evinrude Outboard

• 317955

Mallory

• 9-60435

Interchanges/Replaces

Chrysler/Force/US Marine

• 27-F372154-1

GLM

• 37360

Additional Details:

• For: Mercury 70-125 Hp

Interchanges/Replaces

Chrysler/Force/US Marine

• 27-430086

GLM

• 32840

Mercury Marine

• 27-43008
• 27-430082
• 27-430083
• 27-430085
• 27-430086

Interchanges/Replaces

GLM

• 33190

Johnson/Evinrude Outboard

• 309170
• 319348

Interchanges/Replaces

Mercury Marine

• 27-832933006
• 27-8329331
• 27-8329332
• 27-8329333
• 27-8329334
• 27-8329335

Mercury Race Outboard

• 27-832933006
• 27-8329335

Additional Details:

• For: Mercury V-135/V-150

Interchanges/Replaces

GLM

• 32540

Mercury Marine

• 27-96440
• 27-99776
• 27-997761

Additional Details:

• For: Mercury V-175/V-200

Interchanges/Replaces

Mallory

• 9-60046

Mercury Marine

• 27-99176
• 27-991762
• 27-991763
• 27-991764

Mercury Race Outboard

• 27-99176

Key Features:

• V-6

Interchanges/Replaces

GLM

• 33590

Johnson/Evinrude Outboard

• 321182

Mallory

• 9-60433

Interchanges/Replaces

GLM

• 33190

Johnson/Evinrude Outboard

• 309170
• 319348

Key Features:

• Compounded rubber flapper valves prevent water from entering the exhaust system
• Made with weather resistant EPDM with U/V stabilizer

Additional Details:

• Includes: Stainless Steel Clamp
• Size: 3" or 76.2mm

Interchanges/Replaces

GLM

• 89240

Mallory

• 9-44000

Mercruiser Stern Drive

• 34765A1
• 34765A2

Key Features:

• Compounded rubber flapper valves prevent water from entering the exhaust system
• Made with weather resistant EPDM with U/V stabilizer

Additional Details:

• Includes: Stainless Steel Clamp
• Size: 4" or 101.6mm

Interchanges/Replaces

GLM

• 89250

Mallory

• 9-44001

Mercruiser Stern Drive

• 12644A1
• 12644Q01

Key Features:

• Compounded rubber flapper valves prevent water from entering the exhaust system
• Made with weather resistant EPDM with U/V stabilizer
• 5" Requires two 45° cuts

Additional Details:

• Includes: Stainless Steel Clamp
• Size: 5" & 6" or 127mm & 152.4mm

Interchanges/Replaces

GLM

• 89260

Mallory

• 9-44002

Additional Details:

• Fits: MCM 120 & 140: 160 & 165 (in-line 6 cyl.)

Interchanges/Replaces

GLM

• 89060

Mallory

• 9-72807

Mercruiser Stern Drive

• 53114
• 53114A1

Additional Details:

• Fits: MCM 470/485, 898, 228, 250, 260, 280, 330 & Ford 233

Interchanges/Replaces

GLM

• 89070

Mallory

• 9-72808

Mercruiser Stern Drive

• 70981
• 70981A3

Additional Details:

• I.D.: 3" or 76.2mm
• Fits: MCM 470/485, 185, 205, 898, 228 & 260

Interchanges/Replaces

GLM

• 89090

Mallory

• 9-72809

Mercruiser Stern Drive

• 32-90949
• 32-90949T

Additional Details:

• For: #1, Bravo I, II, III

Interchanges/Replaces

GLM

• 89150

Mallory

• 9-72810

Mercruiser Stern Drive

• 78458
• 78458A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-710-48-2	Mercruiser Stern Drive 54-32533 54-815504348 OMC Stern Drive 3852604 912667 981323 Volvo Penta 3852604	1	Hose Clamp-2-9/16 TO 3-1/2		N/A
9-73116	Mercruiser Stern Drive 54-86049	1	BELLOWS GROUND CLIP		N/A

Interchanges/Replaces

Mallory

• 9-72804

Mercruiser Stern Drive

• 32-807458T

Additional Details:

• Length: 3"
• Width: 3.780"

Interchanges/Replaces

Mallory

• 9-42800

Mercruiser Stern Drive

• 60930